#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<assert.h>
//int main()
//{
//	int arr1[] = { 1,2,3,4,5,6,7,8,9,10 };
//	int arr2[20] = { 0 };
//	memcpy(arr2, arr1+2, 20);
//	return 0;
//}
void* my_memcpy(void* dest, const void* src, size_t num)
{
	int i = 0;
	void* ret = dest;
	assert(dest && src);
	for (i = 0;i < num;i++)
	{
		*(char*)dest = *(char*)src;
		dest = (char*)dest + 1;
		src = (char*)src + 1;
	}
	return ret;
}
int main()
{
	int arr1[] = { 1,2,3,4,5,6,7,8,9,10 };
	int arr2[20] = { 0 };
	my_memcpy(arr2, arr1 + 2, 20);
	return 0;
}